package com.vanka.utils;

import java.security.MessageDigest;

public class MD5Util {

   //盐
   private static final String SALT = "VanKa";

   public static String encode(String password) {
      password = password + SALT;
      MessageDigest md5 = null;
      try {
         md5 = MessageDigest.getInstance("MD5");
      } catch (Exception e) {
         throw new RuntimeException(e);
      }
      char[] charArray = password.toCharArray();
      byte[] byteArray = new byte[charArray.length];

      for (int i = 0; i < charArray.length; i++)
         byteArray[i] = (byte) charArray[i];
      byte[] md5Bytes = md5.digest(byteArray);
      StringBuffer hexValue = new StringBuffer();
      for (int i = 0; i < md5Bytes.length; i++) {
         int val = ((int) md5Bytes[i]) & 0xff;
         if (val < 16) {
            hexValue.append("0");
         }

         hexValue.append(Integer.toHexString(val));
      }
      return hexValue.toString();
   }

   public static void main(String[] args) {
      System.out.println(MD5Util.encode("mayikt_add"));

   }
}